Release upload fixes

[rtibbles]

Summary

• Updates the path specification for upload to GCS to include the extra folder that the Github download artifacts action adds when multiple artifacts are uploaded from different action steps.
• Updates the Raspberry Pi image generator and Windows installer actions to versions that name the outputted files in accordance with the expectations for our release assets.
• Fixes oversight where the Mac App generation was not pinned in the PR build

References

Fixes #11908

Reviewer guidance

Because of how the action works, we'll have to wait for release to truly test it - but a quick eyeball of the changes (making sure that the @ tags on the actions match up with the ref inputs) would be helpful. Also, we can check the names of the built asset for the Windows installer in this PR.

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Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[bjester]

why is ${{ matrix.filename }} in here twice?

[rtibbles]

It's because of this fun quirk of the download-artifacts action: https://github.com/actions/download-artifact?tab=readme-ov-file#download-all-artifacts

Basically, artifacts get downloaded into a folder with the same name as the file, for reasons that I have still not adequately understood :)

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.16.1b2.dev0_git.3.g69e67246.pex
Windows Installer (EXE)	kolibri-0.16.1b2.dev0+git.3.g69e67246-windows-setup-unsigned.exe
Debian Package	kolibri_0.16.1b2.dev0+git.3.g69e67246-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.16.1b2.dev0+git.3.g69e67246-0.4.0.dmg
Android Package (APK)	kolibri-0.16.1b2.dev0+git.3.g69e67246-0.1.1-debug.apk
TAR file	kolibri-0.16.1b2.dev0+git.3.g69e67246.tar.gz
WHL file	kolibri-0.16.1b2.dev0+git.3.g69e67246-py2.py3-none-any.whl

[marcellamaki]

looks good - I did a search for the past references to ensure all were updated, and cross referenced the versions with the latest releases. all checks out.